Microsoft has 4,599 CVEs on record between 2012 and 2026. Disclosure cadence is accelerating: 2930 in the last 90 days against 934 in the 90 before. The busiest recent month was October 2026 with 1482. The median CVSS is 7.8 (high), with 273 rated critical. 2% have been exploited in the wild, in line with the corpus average. The median gap from publication to a KEV listing is 112 days (95 cases). The dominant weakness classes are CWE-122 (931) and CWE-416 (851). Most affected products: windows_10_1607 (988), Windows 10 Version 1607 (877), 365_apps (267).

CVEs per month

Last 12 months, by publish date

1225/120126/010226/020326/030426/040526/050626/060726/070826/080926/091026/101126/11

Exploited share: 2% vs 1% corpus
Median CVSS: 7.8
Publish → KEV: 112 d median(95)
Last 90 days: 2930 prev 934

Weakness classes

Products

windows_10_1607 988
Windows 10 Version 1607 877
365_apps 267
Microsoft 365 Apps for Enterprise 232
Windows 10 Version 1809 199
windows_10_1809 174

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4599

Total CVEs

273

Critical

CISA KEV

Exploited

Worst active — by depth score

Microsoft vulnerabilities

CVEs affecting Microsoft, newest first. Open any entry for full detail, references, and exploit status.

4599 CVEsRSS

CVEs per month

Weakness classes

Products

Worst active — by depth score

Microsoft vulnerabilities

Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized attacker to elevate privileges over an adjacent network.

Improper access control in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attacker to execute code locally.

Buffer over-read in Windows Common Log File System Driver allows an authorized attacker to disclose information locally.

Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.

Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges locally.

Untrusted pointer dereference in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing locally.

Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network.

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attacker to deny service over a network.

Out-of-bounds read in Windows Portable Device MTP Driver allows an authorized attacker to disclose information locally.

Improper link resolution before file access ('link following') in Windows Update Orchestrator Service allows an authorized attacker to elevate privileges locally.

Incorrect authorization in Windows Device Install Service allows an authorized attacker to elevate privileges locally.

Improper authorization in Windows Virtual Input allows an authorized attacker to elevate privileges locally.

Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows SMB Client allows an unauthorized attacker to elevate privileges over a network.

Buffer over-read in Windows RNDIS allows an unauthorized attacker to disclose information with a physical attack.

Insufficient verification of data authenticity in Windows DHCP Server allows an authorized attacker to bypass a security feature locally.

Generation of error message containing sensitive information in Windows NTFS allows an authorized attacker to disclose information locally.

Use after free in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.

Absolute path traversal in Windows Encrypting File System (EFS) allows an authorized attacker to elevate privileges over a network.

Heap-based buffer overflow in Windows Management Instrumentation allows an authorized attacker to elevate privileges locally.

Heap-based buffer overflow in Windows Shell allows an unauthorized attacker to execute code over a network.

Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.